Increasing Performance of Direct-Drive Inertial Confinement Fusion Implosions via Enhanced Energy Coupling
ORAL
Abstract
Recent advances in predictive statistical modeling have led to record fusion yields and increased overall performance, as measured by the normalized no-alpha Lawson parameter cno a extrapolated to 2 MJ of symmetric drive. These increases were driven largely by (a) the introduction of silicon dopant into the ablator, which increases both collisional absorption and cross-beam energy transfer mitigation, and (b) reducing the pulse duration to couple energy more effectively at early times, when the target is relatively unconverged and silicon dopant is present throughout the corona. We will also present the results of dedicated experiments on OMEGA designed to test LILAC’s coupling model late in the pulse, which has shown good agreement with LILAC yields and areal densities. Finally, hydrodynamic scaling of the best-performing implosions to 2 MJ of symmetric drive gives cno a > 0.8, yield amplification > 3, and scaled fusion yield over 700 kJ.
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Presenters
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Varchas Gopalaswamy
Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester
Authors
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Varchas Gopalaswamy
Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Christian Stoeckl
University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester
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Riccardo Betti
University of Rochester, University of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester
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James P Knauer
University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester
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Aarne Lees
University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Dhrumir P Patel
University of Rochester
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Connor A Williams
University of Rochester
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Rahman Ejaz
Laboratory for Laser Energetics, University of Rochester
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Pericles S Farmakis
University of Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, University of Rochester
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Duc Cao
Laboratory for Laser Energetics, U. of Rochester, U. Rochester/LLE, Laboratory for Laser Energetics, University of Rochester, University of Rochester
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Cliff A Thomas
University of Rochester
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Jonathan Carroll-Nellenback
University of Rochester
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Suxing Hu
Laboratory for Laser Energetics, University of Rochester, LLE, University of Rochester, Lab. for Laser Energetics, U. of Rochester
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Timothy J Collins
University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Valeri N Goncharov
University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Vladimir Y Glebov
Lab for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Zaarah L Mohamed
Los Alamos National Laboratory, University of Rochester
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Chad J Forrest
Lab for Laser Energetics, University of Rochester
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Kristen Churnetski
University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester
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Rahul C Shah
Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Steven T Ivancic
Lab for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Michael J Rosenberg
University of Rochester, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester
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Hans Rinderknecht
Laboratory for Laser Energetics, Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Sean P Regan
Laboratory for Laser Energetics, University of Rochester, University of Rochester, Laboratory for Laser Energetics, U. of Rochester
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Dana H Edgell
LLE, Laboratory for Laser Energetics, University of Rochester
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Wolfgang R Theobald
University of Rochester, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester
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Mark J Bonino
Laboratory for Laser Energetics, LLE, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Roger T Janezic
Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Walter Shmayda
University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Siddharth Sampat
Laboratory for Laser Energetics, LLE, University of Rochester, Laboratory for Laser Energetics, University of Rochester
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Owen M Mannion
Sandia National Laboratories, University of Rochester
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Maria Gatu-Johnson
MIT, Massachusetts Institute of Technology MI, Massachusetts Institute of Technology